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Effects of a 20-month cluster randomised controlled school-based intervention trial on BMI of school-aged boys and girls: the HEIA study.
Br J Sports Med. 2014 May; 48(9):768-73.BJ

Abstract

BACKGROUND

School-based interventions that target prevention of overweight and obesity in children have been tested with mixed results. Thus, successful interventions are still called for. The aim of the present study was to investigate effects of a multicomponent school-based intervention programme targeting physical activity, sedentary and dietary behaviours on anthropometric outcomes.

METHODS

A 20-month intervention was evaluated in a cluster randomised, controlled study of 1324 11-year-olds. Outcome variables were body mass index (BMI), BMI-for-age z-score (BMIz), waist circumference (WC), waist-to-height ratio (WTHR) and weight status (International Obesity Task Force's cut-offs). Weight, height and WC were measured objectively; pubertal status was self-reported and parental education was self-reported by the parents. Intervention effects were determined by one-way analysis of covariance and logistic regression, after checking for clustering effects of school, and moderating effects of gender, pubertal status and parental education.

RESULTS

Beneficial effects were found for BMI (p=0.02) and BMIz (p=0.003) in girls, but not in boys. While a beneficial effect was found for BMI (p=0.03) in participants of parents reporting a high level of education, a negative effect was found for WTHR in participants with parents reporting a low level of education (p=0.003). There were no intervention effects for WC and weight status.

CONCLUSIONS

A multicomponent 20-month school-based intervention had a beneficial effect on BMI and BMIz in adolescent girls, but not in boys. Furthermore, children of higher educated parents seemed to benefit more from the intervention, and this needs attention in future interventions to avoid further increase in social inequalities in overweight and obesity.

Authors+Show Affiliations

Department of Sports Medicine, Norwegian School of Sport Sciences, , Oslo, Norway.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Randomized Controlled Trial
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

23624466

Citation

Grydeland, May, et al. "Effects of a 20-month Cluster Randomised Controlled School-based Intervention Trial On BMI of School-aged Boys and Girls: the HEIA Study." British Journal of Sports Medicine, vol. 48, no. 9, 2014, pp. 768-73.
Grydeland M, Bjelland M, Anderssen SA, et al. Effects of a 20-month cluster randomised controlled school-based intervention trial on BMI of school-aged boys and girls: the HEIA study. Br J Sports Med. 2014;48(9):768-73.
Grydeland, M., Bjelland, M., Anderssen, S. A., Klepp, K. I., Bergh, I. H., Andersen, L. F., Ommundsen, Y., & Lien, N. (2014). Effects of a 20-month cluster randomised controlled school-based intervention trial on BMI of school-aged boys and girls: the HEIA study. British Journal of Sports Medicine, 48(9), 768-73. https://doi.org/10.1136/bjsports-2013-092284
Grydeland M, et al. Effects of a 20-month Cluster Randomised Controlled School-based Intervention Trial On BMI of School-aged Boys and Girls: the HEIA Study. Br J Sports Med. 2014;48(9):768-73. PubMed PMID: 23624466.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effects of a 20-month cluster randomised controlled school-based intervention trial on BMI of school-aged boys and girls: the HEIA study. AU - Grydeland,May, AU - Bjelland,Mona, AU - Anderssen,Sigmund Alfred, AU - Klepp,Knut-Inge, AU - Bergh,Ingunn Holden, AU - Andersen,Lene Frost, AU - Ommundsen,Yngvar, AU - Lien,Nanna, Y1 - 2013/04/27/ PY - 2013/4/30/entrez PY - 2013/4/30/pubmed PY - 2014/12/18/medline KW - Adolescents KW - Health promotion through physical activity KW - Interactions between food intake and physical activity/exercise SP - 768 EP - 73 JF - British journal of sports medicine JO - Br J Sports Med VL - 48 IS - 9 N2 - BACKGROUND: School-based interventions that target prevention of overweight and obesity in children have been tested with mixed results. Thus, successful interventions are still called for. The aim of the present study was to investigate effects of a multicomponent school-based intervention programme targeting physical activity, sedentary and dietary behaviours on anthropometric outcomes. METHODS: A 20-month intervention was evaluated in a cluster randomised, controlled study of 1324 11-year-olds. Outcome variables were body mass index (BMI), BMI-for-age z-score (BMIz), waist circumference (WC), waist-to-height ratio (WTHR) and weight status (International Obesity Task Force's cut-offs). Weight, height and WC were measured objectively; pubertal status was self-reported and parental education was self-reported by the parents. Intervention effects were determined by one-way analysis of covariance and logistic regression, after checking for clustering effects of school, and moderating effects of gender, pubertal status and parental education. RESULTS: Beneficial effects were found for BMI (p=0.02) and BMIz (p=0.003) in girls, but not in boys. While a beneficial effect was found for BMI (p=0.03) in participants of parents reporting a high level of education, a negative effect was found for WTHR in participants with parents reporting a low level of education (p=0.003). There were no intervention effects for WC and weight status. CONCLUSIONS: A multicomponent 20-month school-based intervention had a beneficial effect on BMI and BMIz in adolescent girls, but not in boys. Furthermore, children of higher educated parents seemed to benefit more from the intervention, and this needs attention in future interventions to avoid further increase in social inequalities in overweight and obesity. SN - 1473-0480 UR - https://www.unboundmedicine.com/medline/citation/23624466/Effects_of_a_20_month_cluster_randomised_controlled_school_based_intervention_trial_on_BMI_of_school_aged_boys_and_girls:_the_HEIA_study_ L2 - http://bjsm.bmj.com/cgi/pmidlookup?view=long&pmid=23624466 DB - PRIME DP - Unbound Medicine ER -